An outbreak of multidrug-resistant Salmonella Kentucky infection in long-nosed fur seals.

Dis Aquat Organ

Sea World, PO Box 190, Surfers Paradise, 4217 Queensland, Australia.

Published: December 2020

An outbreak of salmonellosis occurred in a group of 7 long-nosed fur seals Arctocephalus forsteri undergoing rehabilitation after being found injured and malnourished on beaches along the northern New South Wales and southern Queensland coasts of Australia. Three of the 7 individuals developed clinical disease and died within 3 d. Clinical signs included profuse diarrhea, vomiting, depression, and lethargy. Salmonella enterica subsp. enterica serovar Kentucky (S. Kentucky) was cultured from 2 of the 3 deceased animals. The other 4 animals showed similar signs and recovered following treatment. S. Kentucky (antigenic formula 8,20:i:z6) was isolated from the survivors and tissues recovered from post-mortem samples of deceased animals. The bacterium was susceptible to cephalothin and sulfamethoxazole/trimethoprim and resistant to amoxicillin-clavulanate, ampicillin/amoxicillin, tetracycline, and enrofloxacin. This organism has the potential to cause disease in aquatic wildlife, as well as posing a zoonotic threat to people who utilise the aquatic environment.

Download full-text PDF

Source
http://dx.doi.org/10.3354/dao03540DOI Listing

Publication Analysis

Top Keywords

long-nosed fur
8
fur seals
8
deceased animals
8
outbreak multidrug-resistant
4
multidrug-resistant salmonella
4
kentucky
4
salmonella kentucky
4
kentucky infection
4
infection long-nosed
4
seals outbreak
4

Similar Publications

Persistent organic pollutants and trace elements detected in New Zealand fur seals (long-nosed fur seal; Arctocephalus forsteri) from New South Wales, Australia, between 1998 and 2019.

Sci Total Environ

December 2023

NSW Department of Planning, Industry and Environment, Environment Protection Science Branch, Sydney, New South Wales, Australia. Electronic address:

Environmental pollution is a growing threat to wildlife health and biodiversity. The relationship between marine mammals and pollutants is, however, complex and as new chemicals are introduced to ecosystems alongside concomitant, interacting threats such as climate change and habitat degradation, the cumulative impact of these stressors to wildlife continues to expand. Understanding the health of wildlife populations requires a holistic approach to identify potential threatening processes.

View Article and Find Full Text PDF

Dredging activity in a highly urbanised estuary did not affect the long-term occurrence of Indo-Pacific bottlenose dolphins and long-nosed fur seals.

Mar Pollut Bull

November 2022

Global Ecology, College of Science and Engineering, ARC Centre of Excellence for Australian Biodiversity and Heritage, Flinders University, Adelaide, South Australia 5001, Australia; Evolutionary Genetics Group, Department of Anthropology, University of Zurich, 8057 Zurich, Switzerland; School of Earth and Environment, University of Canterbury, 8041 Christchurch, New Zealand; Cetacean Ecology Research Group, School of Natural Sciences, Massey University, 0745 Auckland, New Zealand. Electronic address:

Dredging is an excavation activity used worldwide in marine and freshwater environments to create, deepen, and maintain waterways, harbours, channels, locks, docks, berths, river entrances, and approaches to ports and boat ramps. However, dredging impacts on marine life, including marine mammals (cetaceans, pinnipeds, and sirenians), remain largely unknown. Here we quantified the effect of dredging operations in 2005 and 2019 on the occurrence of Indo-Pacific bottlenose dolphins (Tursiops aduncus) and long-nosed fur seals (Arctocephalus forsteri) in the Port River estuary, a highly urbanized estuary in Adelaide, South Australia.

View Article and Find Full Text PDF

Implications of Escherichia coli community diversity in free-ranging Australian pinniped pups.

Infect Genet Evol

October 2022

Sydney School of Veterinary Science, Faculty of Science, The University of Sydney, Camperdown, NSW, Australia. Electronic address:

Escherichia coli is a widely studied bacterium, commonly used as an indicator of faecal contamination. Investigations into the structure and diversity of E. coli in free-ranging wildlife species has been limited.

View Article and Find Full Text PDF

The rapid emergence of antimicrobial resistance (AMR) is a major concern for wildlife and ecosystem health globally. Genetic determinants of AMR have become indicators of anthropogenic pollution due to their greater association with humans and rarer presence in environments less affected by humans. The objective of this study was to determine the distribution and frequency of the class 1 integron, a genetic determinant of AMR, in both the faecal microbiome and in Escherichia coli isolated from neonates of three pinniped species.

View Article and Find Full Text PDF

Per and polyfluoroalkyl substances (PFAS) at high concentrations in neonatal Australian pinnipeds.

Sci Total Environ

September 2021

Sydney School of Veterinary Science, Faculty of Science, The University of Sydney, Camperdown, NSW 2006, Australia. Electronic address:

Article Synopsis
  • Researchers studied PFAS exposure in Australian pinnipeds (sea lions and fur seals) from 2017-2020, measuring 16 types of PFAS in their livers.
  • The highest PFAS concentrations were found in perfluorooctane sulfonate (PFOS), perfluorooctanoic acid (PFOA), and perfluorononanoic acid (PFNA), with notable differences between species and locations.
  • The findings highlight significant PFAS levels in endangered species, suggesting maternal transfer of these harmful chemicals and indicating the need for further study on their health impacts.
View Article and Find Full Text PDF

Want AI Summaries of new PubMed Abstracts delivered to your In-box?

Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!